home *** CD-ROM | disk | FTP | other *** search
- ;/* showprefs.c - Execute me to compile me with SAS C 5.10
- LC -b0 -d0 -cfis -v -j73 showprefs.c
- Blink FROM showprefs.o TO showprefs LIBRARY LIB:Amiga.lib
- quit
- */
-
- /*
- Copyright (c) 1992 Commodore-Amiga, Inc.
-
- This example is provided in electronic form by Commodore-Amiga, Inc. for
- use with the "Amiga ROM Kernel Reference Manual: Libraries", 3rd Edition,
- published by Addison-Wesley (ISBN 0-201-56774-1).
-
- The "Amiga ROM Kernel Reference Manual: Libraries" contains additional
- information on the correct usage of the techniques and operating system
- functions presented in these examples. The source and executable code
- of these examples may only be distributed in free electronic form, via
- bulletin board or as part of a fully non-commercial and freely
- redistributable diskette. Both the source and executable code (including
- comments) must be included, without modification, in any copy. This
- example may not be published in printed form or distributed with any
- commercial product. However, the programming techniques and support
- routines set forth in these examples may be used in the development
- of original executable software products for Commodore Amiga computers.
-
- All other rights reserved.
-
- This example is provided "as-is" and is subject to change; no
- warranties are made. All use is at your own risk. No liability or
- responsibility is assumed.
- */
-
- /*
- ** showprefs.c - parse and show some info from an IFF Preferences file
- ** NOTE: This example requires upcoming 2.1 prefs/ include files.
- **
- ** IMPORTANT!! This example is not linked with startup code (eg. c.o).
- ** It uses strictly direct AmigaDOS stdio, and also demonstrates
- ** direct ReadArgs argument parsing. Therefore it is a CLI-only
- ** example. If launched from Workbench, packet errors would occur
- ** since the WbStartup message is still sitting in the process's
- ** pr_MsgPort, and the code would never be unloaded from memory.
- */
-
- #include <exec/types.h>
- #include <dos/dos.h>
- #include <libraries/dos.h>
- #include <libraries/iffparse.h>
- #include <prefs/prefhdr.h>
- #include <prefs/font.h>
- #include <prefs/icontrol.h>
- #include <prefs/input.h>
- #include <prefs/overscan.h>
- #include <prefs/printergfx.h>
- #include <prefs/printertxt.h>
- #include <prefs/screenmode.h>
- #include <prefs/serial.h>
-
- #include <clib/exec_protos.h>
- #include <clib/dos_protos.h>
- #include <clib/iffparse_protos.h>
-
- struct ExecBase *SysBase;
- struct Library *DOSBase;
- struct Library *IFFParseBase;
-
- static UBYTE *IFFErrTxt[] = {
- "EOF", /* (end of file, not an error) */
- "EOC", /* (end of context, not an error) */
- "no lexical scope",
- "insufficient memory",
- "stream read error",
- "stream write error",
- "stream seek error",
- "file corrupt",
- "IFF syntax error",
- "not an IFF file",
- "required call-back hook missing",
- NULL, /* (return to client, never shown) */
- };
-
- LONG main(void)
- {
- struct RDArgs *readargs = NULL;
- LONG rargs[2];
- struct IFFHandle *iffhandle;
- struct ContextNode *cnode;
- struct StoredProperty *hdrsp;
- struct StoredProperty *sp;
- UBYTE *filename = NULL;
- LONG ifferror, error = 0, rc = RETURN_OK;
-
- /* We must set up SysBase (we are not linked with startup code) */
- SysBase = (*((struct Library **) 4));
-
- /* This no-startup-code example may not be used from Workbench */
- if ((((struct Process *)FindTask(NULL))->pr_CLI)==NULL)
- return(RETURN_FAIL);
-
- if (DOSBase = OpenLibrary("dos.library", 37)) {
- if (IFFParseBase = OpenLibrary ("iffparse.library", 37)) {
-
- readargs = ReadArgs("FILE/A", rargs, NULL);
- if( (readargs) && (rargs[0]) ) {
-
- filename = (UBYTE *)rargs[0];
-
- /* allocate an IFF handle */
- if (iffhandle = AllocIFF()) {
- /* Open the file for reading */
- if (iffhandle->iff_Stream = (LONG)Open(filename, MODE_OLDFILE)) {
- /* initialize the iff handle */
- InitIFFasDOS (iffhandle);
- if ((ifferror = OpenIFF (iffhandle, IFFF_READ)) == 0) {
- PropChunk(iffhandle, ID_PREF, ID_PRHD);
-
- PropChunk(iffhandle, ID_PREF, ID_FONT);
- PropChunk(iffhandle, ID_PREF, ID_ICTL);
- PropChunk(iffhandle, ID_PREF, ID_INPT);
- PropChunk(iffhandle, ID_PREF, ID_OSCN);
- PropChunk(iffhandle, ID_PREF, ID_PGFX);
- PropChunk(iffhandle, ID_PREF, ID_PTXT);
- PropChunk(iffhandle, ID_PREF, ID_SCRM);
- PropChunk(iffhandle, ID_PREF, ID_SERL);
-
- for (;;) {
- ifferror = ParseIFF(iffhandle, IFFPARSE_STEP);
-
- if (ifferror == IFFERR_EOC)
- continue;
- else if (ifferror)
- break;
-
- /* Do nothing is this is a PrefHeader chunk,
- * we'll pop it later when there is a pref
- * chunk.
- */
- if (cnode = CurrentChunk(iffhandle))
- if (cnode->cn_ID == ID_PRHD || cnode->cn_ID == ID_FORM)
- continue;
-
- /* Get the preferences header, stored previously */
- hdrsp = FindProp(iffhandle, ID_PREF, ID_PRHD);
-
- if (sp = FindProp(iffhandle, ID_PREF, ID_FONT)) {
- Printf("FrontPen: %ld\n",
- ((struct FontPrefs *)sp->sp_Data)->fp_FrontPen);
- Printf("BackPen: %ld\n",
- ((struct FontPrefs *)sp->sp_Data)->fp_BackPen);
- Printf("DrawMode: %ld\n",
- ((struct FontPrefs *)sp->sp_Data)->fp_DrawMode);
- Printf("Font: %s\n",
- (LONG)((struct FontPrefs *)sp->sp_Data)->fp_Name);
- Printf("ta_YSize: %ld\n",
- ((struct FontPrefs *)sp->sp_Data)->fp_TextAttr.ta_YSize);
- Printf("ta_Style: %ld\n",
- ((struct FontPrefs *)sp->sp_Data)->fp_TextAttr.ta_Style);
- Printf("ta_Flags: %ld\n",
- ((struct FontPrefs *)sp->sp_Data)->fp_TextAttr.ta_Flags);
- } else if (sp = FindProp(iffhandle, ID_PREF, ID_ICTL)) {
- Printf("TimeOut: %ld\n",
- ((struct IControlPrefs *)sp->sp_Data)->ic_TimeOut);
- Printf("MetaDrag: %ld\n",
- ((struct IControlPrefs *)sp->sp_Data)->ic_MetaDrag);
- Printf("WBtoFront: %ld\n",
- ((struct IControlPrefs *)sp->sp_Data)->ic_WBtoFront);
- Printf("FrontToBack: %ld\n",
- ((struct IControlPrefs *)sp->sp_Data)->ic_FrontToBack);
- Printf("ReqTrue: %ld\n",
- ((struct IControlPrefs *)sp->sp_Data)->ic_ReqTrue);
- Printf("ReqFalse: %ld\n",
- ((struct IControlPrefs *)sp->sp_Data)->ic_ReqFalse);
- /* etc */
- } else if (sp = FindProp(iffhandle, ID_PREF, ID_INPT)) {
- Printf("PointerTicks: %ld\n",
- ((struct InputPrefs *)sp->sp_Data)->ip_PointerTicks);
- Printf("DoubleClick/Secs: %ld\n",
- ((struct InputPrefs *)sp->sp_Data)->ip_DoubleClick.tv_secs);
- Printf("DoubleClick/Micro: %ld\n",
- ((struct InputPrefs *)sp->sp_Data)->ip_DoubleClick.tv_micro);
- /* etc */
- } else if (sp = FindProp(iffhandle, ID_PREF, ID_OSCN)) {
- Printf("DisplayID: 0x%lx\n",
- ((struct OverscanPrefs *)sp->sp_Data)->os_DisplayID);
- /* etc */
- } else if (sp = FindProp(iffhandle, ID_PREF, ID_PGFX)) {
- Printf("Aspect: %ld\n",
- ((struct PrinterGfxPrefs *)sp->sp_Data)->pg_Aspect);
- /* etc */
- } else if (sp = FindProp(iffhandle, ID_PREF, ID_PTXT)) {
- Printf("Driver: %s\n",
- (LONG)((struct PrinterTxtPrefs *)sp->sp_Data)->pt_Driver);
- /* etc */
- } else if (sp = FindProp(iffhandle, ID_PREF, ID_SCRM)) {
- Printf("DisplayID: 0x%lx\n",
- ((struct ScreenModePrefs *)sp->sp_Data)->sm_DisplayID);
- /* etc */
- } else if (sp = FindProp(iffhandle, ID_PREF, ID_SERL)) {
- Printf("BaudRate: %ld\n",
- ((struct SerialPrefs *)sp->sp_Data)->sp_BaudRate);
- /* etc */
- }
- }
-
- CloseIFF(iffhandle);
- }
-
- if (ifferror != IFFERR_EOF) {
- rargs[1] = (LONG)IFFErrTxt[-ifferror - 1];
- VFPrintf(Output(), "%s: %s\n", rargs);
- rc = RETURN_FAIL;
- }
-
- Close(iffhandle->iff_Stream);
- } else
- error = IoErr();
-
- FreeIFF(iffhandle);
- } else {
- VFPrintf(Output(), "Can't allocate IFF handle\n", NULL);
- rc = RETURN_FAIL;
- }
- } else
- error = IoErr();
- CloseLibrary(IFFParseBase);
-
-
- SetIoErr(error);
- if (error) {
- rc = RETURN_FAIL;
- PrintFault(error, filename ? filename : "");
- }
- }
-
- if(readargs) FreeArgs(readargs);
- CloseLibrary(DOSBase);
-
- } else {
- rc = RETURN_FAIL;
- }
-
- return(rc);
- }
-